CN107575997A - A kind of method and apparatus that pipeline fracture is monitored in air-conditioning system and its operation - Google Patents
A kind of method and apparatus that pipeline fracture is monitored in air-conditioning system and its operation Download PDFInfo
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- CN107575997A CN107575997A CN201711014183.2A CN201711014183A CN107575997A CN 107575997 A CN107575997 A CN 107575997A CN 201711014183 A CN201711014183 A CN 201711014183A CN 107575997 A CN107575997 A CN 107575997A
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- air
- conditioning system
- valves
- pipeline
- knots modification
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The method and apparatus that pipeline fracture is monitored in being run the invention discloses a kind of air-conditioning system.Described method includes：After the start operation of step 1. air-conditioning system, at interval of a scheduled time t, an a pressure at expulsion Pi and evaporator copper pipe stream center outer surface temperature Ti is detected；Step 2. is calculated in adjacent time inter, pressure at expulsion knots modification Δ Pi and evaporator copper pipe stream center outer surface temperature knots modification Δ Ti；Step 3. is by pressure at expulsion knots modification Δ Pi compared with Δ P valves, simultaneously by evaporator copper pipe stream center outer surface temperature knots modification Δ Ti compared with Δ T valves, when there is Δ Pi >=Δ P valves and Δ Ti >=Δ T valves simultaneously, then record number and be 1 time and add up that mark cumulative number is N；And step 4. then judges pipeline fracture when continuous occurrence number N is equal to an accumulative test threshold Ni.The present invention also provides a kind of air-conditioning system.
Description
Technical field
The present invention relates to the side that pipeline fracture is monitored in air-conditioning technical field, more particularly to a kind of air-conditioning system and its operation
Method and device.
Background technology
The pipeline of air-conditioning system is the passage of refrigerant flowing, if pipeline fracture occurs in operation for air-conditioning system, can be caused
Coolant leakage, cause air-conditioning system refrigerating/heating hydraulic performance decline, compressor is run under poor situation, even go out when serious
The situation of existing compressor damage, influence the normal work of air-conditioning system；If refrigerant has toxicity simultaneously, entail dangers to user's
Health；Further, because the refrigerant of leakage can contact with the electric elements in work, if refrigerant has flammable, can draw
Fire etc. is played, there is serious potential safety hazard.But the reason for causing pipeline to be broken in the operation of air-conditioning system, is a lot, than
Such as：The refrigerant pressure fluctuation of operating air-conditioning system exceedes the pressure that pipeline can bear；Pipeline operation ess-strain is exceeded；
Operating air-conditioning system is by shock of external object etc..Therefore the pipeline in air-conditioning system operation how is detected in time
Fracture becomes technical problem urgently to be resolved hurrily.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention proposes pipeline fracture in a kind of air-conditioning system and its operation
Monitoring method and device, the pipeline in air-conditioning system operation can be detected in time and is broken.
The technical solution adopted by the present invention is to design a kind of method that pipeline fracture is monitored in air-conditioning system operation, including
The following steps：
Step 1., at interval of a scheduled time t, detects a pressure at expulsion Pi and an evaporator after air-conditioning system start operation
Copper pipe stream center outer surface temperature Ti；
Step 2. is calculated in adjacent time inter, pressure at expulsion knots modification Δ Pi and evaporator copper pipe stream center outer surface temperature
Knots modification Δ Ti；
Step 3. by pressure at expulsion knots modification Δ Pi compared with Δ P valves, while will be outer in the middle part of the evaporator copper pipe stream
Surface temperature knots modification Δ Ti is compared with Δ T valves；When there is Δ Pi >=Δ P valves and Δ Ti >=Δ T valves simultaneously, then record
Number is 1 time and added up that mark cumulative number is N；And
Step 4. then judges pipeline fracture when continuous occurrence number N is equal to an accumulative test threshold Ni；When continuous occurrence number
When N is less than the accumulative test threshold Ni, then continuously simultaneously return to step 1 continues to detect the complete machine of the air-conditioning system for operation.
The method of pipeline fracture is monitored in air-conditioning system operation also includes step 4：When judging pipeline fracture, open immediately
Dynamic safety prevention measure.
The complete machine of the safety prevention measure including the air-conditioning system is out of service and/or alarm, and/or starts air draft dress
Put.
The present invention also provides the device that pipeline fracture is monitored in a kind of air-conditioning system operation, and the device includes：
Detection module, for after air-conditioning system start operation, at interval of a scheduled time t, one pressure at expulsion Pi of detection and
One evaporator copper pipe stream center outer surface temperature Ti；
Computing module, for calculating in adjacent time inter, pressure at expulsion knots modification Δ Pi and evaporator copper pipe stream middle part are outer
Surface temperature knots modification Δ Ti；And
Judge module, for by pressure at expulsion knots modification Δ Pi compared with Δ P valves, by the middle part of the evaporator copper pipe stream
Hull-skin temperature knots modification Δ Ti when there is Δ Pi >=Δ P valves and Δ Ti >=Δ T valves simultaneously, then remembers compared with Δ T valves
Record number is 1 time and added up that mark cumulative number is N, when continuous occurrence number N is equal to an accumulative test threshold Ni, is then sentenced
Fixed tube road is broken；When continuous occurrence number N is less than the accumulative test threshold Ni, then the complete machine of the air-conditioning system is continuously run simultaneously
Continue to detect using the detection module.
The device of pipeline fracture is monitored in air-conditioning system operation also includes a safety protection module, for when the judgement mould
When block judges pipeline fracture, immediately to the starting of air conditioner safety precautions.
The complete machine of the safety precautions including the air-conditioning system is out of service and/or alarm, and/or starts air draft dress
Put.
The present invention also provides a kind of air-conditioning system, and the air-conditioning system includes the device of above-mentioned monitoring pipeline fracture.
The present invention also provides a kind of air-conditioning system, the method that the air-conditioning system is broken using above-mentioned monitoring pipeline.
Compared with prior art, the beneficial effects of the invention are as follows：Pipeline fracture is carried out real in being run to air-conditioning system
When monitor, so as in time find pipeline fracture, effectively avoid pipeline fracture caused by adverse consequences.
Brief description of the drawings
Fig. 1 is the flow chart for the method that pipeline fracture is monitored in the air-conditioning system operation of first embodiment of the invention；
Fig. 2 is the functional block diagram for the device that pipeline fracture is monitored in the air-conditioning system operation of second embodiment of the invention.
Embodiment
Invention is described in detail with reference to the accompanying drawings and examples.
As shown in figure 1, monitoring the method for pipeline fracture in air-conditioning system operation proposed by the present invention, comprise the following steps：
S1：After air-conditioning system start operation, at interval of a scheduled time t, a pressure at expulsion Pi and an evaporator copper are detected
Pipe stream center outer surface temperature Ti.It is appreciated that after the air-conditioning system is started shooting and run, compressor and evaporator start work
Make so that the exhaust outlet of the compressor produces pressure at expulsion Pi, and evaporator copper pipe stream center outer surface temperature Ti starts
Change.Scheduled time t manufactures actual conditions of the manufacturer according to the air-conditioning system by the air-conditioning system（Such as should
A number for air-conditioning, fixed frequency or frequency conversion etc.）Set.
S2：Calculate in adjacent time inter, pressure at expulsion knots modification Δ Pi and evaporator copper pipe stream middle part appearance
Face temperature knots modification Δ Ti.Specifically, assuming that the scheduled time is 3 minutes, the air-conditioning system is in 8:00 brings into operation, then 8:
00 measure the pressure at expulsion be P0, the evaporator copper pipe stream center outer surface temperature is T0；8:03 measures the pressure at expulsion
For P1, the evaporator copper pipe stream center outer surface temperature is T1, then Δ P1=P1-P0, Δ T1=T1-T0.
S3：By pressure at expulsion knots modification Δ Pi compared with Δ P valves, by the evaporator copper pipe stream center outer surface
Temperature knots modification Δ Ti is compared with Δ T valve valves, to judge whether to meet Δ Pi >=Δ P valves and Δ Ti >=Δ T valves simultaneously；When
When there is Δ Pi >=Δ P valves and Δ Ti >=Δ T valves simultaneously, then record number and be 1 time and add up that mark cumulative number is N.Can be with
Understanding, Δ P valves and Δ T valves are the research and development stages in the air-conditioning system, and experimental test and reason are carried out by research staff
Obtained by analysis.If pipeline is broken in air-conditioning system operation, gas caused by the compressor can be from the pipe of fracture
Road is spilt so that the gas discharged from the exhaust outlet of the compressor tails off, then the pressure at expulsion knots modification Δ Pi meetings of the compressor
Increase；If pipeline is broken in air-conditioning system operation simultaneously, this can cause coolant leakage so that the system of the air-conditioning system
Cold or heating effect is deteriorated, so as to cause evaporator copper pipe stream center outer surface temperature knots modification Δ Ti to increase, therefore this
Invention is used as using pressure at expulsion knots modification Δ Pi and evaporator copper pipe stream center outer surface temperature knots modification Δ Ti should
The basis for estimation of the pipeline fracture of air-conditioning system.Because during the use of the air-conditioning system, Δ P valves and Δ T valves can
Can there can be fluctuation, therefore by recording the continuous number for occurring meeting Δ Pi >=Δ P valves and Δ Ti >=Δ T valves simultaneously, can have
Effect improves the judging nicety rate of pipeline fracture.
S4：When continuous occurrence number N is equal to an accumulative test threshold Ni, then judges pipeline fracture, start safety immediately
Safeguard procedures；When continuous occurrence number N is less than the accumulative test threshold Ni, then the complete machine of the air-conditioning system is continuously run and returned
Step 1 is returned to continue to detect.It is appreciated that the accumulative test threshold Ni is the research and development stage in the air-conditioning system, by researching and developing
Personnel carry out experimental test and obtained with theory analysis.The complete machine of the safety prevention measure including the air-conditioning system it is out of service and/
Or alarm（At least one of audio, video, light, picture and text etc. or its combination）, and/or start air exhausting device, thereby using
Family can timely and accurately recognize the failure of the air-conditioning system, and the harm that pipeline is broken is preferably minimized, effectively eliminated various
Potential safety hazard, ensure the security of air-conditioning system operation, improve the satisfaction that user uses.
As shown in Fig. 2 the present invention also provides the device 100 that pipeline fracture is monitored in a kind of air-conditioning system operation, for supervising
Survey whether pipeline in air-conditioning system operation is broken.The air-conditioning system includes a compressor and an evaporator copper pipe.It is appreciated that
After the air-conditioning system is started working, the evaporator of the compressor and the air-conditioning system is started working so that the row of the compressor
Gas port produces pressure at expulsion, and change takes place in the evaporator copper pipe stream center outer surface temperature.
The device 100 of pipeline fracture is monitored in air-conditioning system operation to be included detection module 10, computing module 20, judges mould
Block 30 and safety protection module 40.
The detection module 10 is used for after the air-conditioning system brings into operation, and at interval of a scheduled time t, measures an exhaust pressure
Power and an evaporator copper pipe stream center outer surface temperature.It is appreciated that the manufacturing of the scheduled time by the air-conditioning system
Manufacturer is according to the actual conditions of the air-conditioning system（A such as number, fixed frequency or frequency conversion of the air-conditioning etc.）Set.
The computing module 20 is used to calculate in adjacent time inter, pressure at expulsion knots modification Δ Pi and evaporator copper pipe stream
Center outer surface temperature knots modification Δ Ti.Assuming that the predetermined time interval is 3 minutes, the air-conditioning system is in 8:00 brings into operation,
Then 8:00 measure the pressure at expulsion be P0, the evaporator copper pipe stream center outer surface temperature is T0；8:03 measures the row
Atmospheric pressure is P1, and the evaporator copper pipe stream center outer surface temperature is T1, then Δ P1=P1-P0, Δ T1=T1-T0.
The judge module 30 is used for by pressure at expulsion knots modification Δ Pi compared with Δ P valves, by the evaporator copper pipe
Stream center outer surface temperature knots modification Δ Ti is compared with Δ T valves, to judge whether to meet Δ Pi >=Δ P valves and Δ simultaneously
Ti >=Δ T valves.When there is Δ Pi >=Δ P valves and Δ Ti >=Δ T valves simultaneously, then record number and be 1 time and add up that mark is accumulative
Number is N, when continuous occurrence number N is equal to an accumulative test threshold Ni, then judges pipeline fracture.As continuous occurrence number N
When adding up test threshold Ni less than this, then the complete machine of the air-conditioning system is continuously run and continues to detect using the detection module 10.
It is appreciated that Δ P valves and Δ T valves are the research and development stages in the air-conditioning system, carried out by research staff
Experimental test obtains with theory analysis.If pipeline is broken in air-conditioning system operation, gas caused by the compressor
It can be spilt from the pipeline of fracture so that the gas discharged from the exhaust outlet of the compressor tails off, then the pressure at expulsion knots modification Δ
Pi can increase；If pipeline is broken in air-conditioning system operation simultaneously, this can cause coolant leakage so that the air-conditioning system
Refrigeration or heating effect be deteriorated, so as to cause evaporator copper pipe stream center outer surface temperature knots modification Δ Ti increase, because
This present invention is made using pressure at expulsion knots modification Δ Pi and evaporator copper pipe stream center outer surface temperature knots modification Δ Ti
For the basis for estimation of pipeline fracture.
It is appreciated that because during the use of the air-conditioning system, Δ P valves and Δ T valves may have fluctuation,
Therefore by recording the continuous number for occurring meeting Δ Pi >=Δ P valves and Δ Ti >=Δ T valves simultaneously, the air-conditioning can be effectively improved
The judging nicety rate of the pipeline fracture of system.
The safety protection module 40 is used for when the judge module 30 judges pipeline fracture, immediately to starting of air conditioner safety
Safeguard measure.Complete machine of the safety precautions including the air-conditioning system is out of service and/or alarms（Audio, video, light,
At least one of picture and text etc. or its combination）, and/or start air exhausting device, so that user can timely and accurately recognize
The failure of the air-conditioning system, the harm that the pipeline of the air-conditioning system is broken is preferably minimized, effectively eliminates various potential safety hazards, protected
The security of air-conditioning system operation is demonstrate,proved, improves the satisfaction that user uses.
Third embodiment of the invention also provides a kind of air-conditioning system, and it uses the air-conditioning system of first embodiment of the invention
The method that pipeline fracture is monitored in operation.
Fourth embodiment of the invention also provides a kind of air-conditioning system, and it includes the air-conditioning system of second embodiment of the invention
The device 100 of pipeline fracture is monitored in operation.
Compared with prior art, the method and apparatus that pipeline is broken are monitored in air-conditioning system of the invention and its operation,
Whether pipeline is broken in being run to air-conditioning system is monitored in real time, so as to find pipeline fracture in time, effectively avoids pipe
Adverse consequences caused by the fracture of road.
It should be noted that the step in the flow chart of accompanying drawing can be in the meter of such as one group computer executable instructions
Performed in calculation machine system, although also, show logical order in flow charts, in some cases, can be with difference
Shown or described step is performed in order herein.
Above-described embodiment is merely to illustrate the embodiment of the present invention.It should be pointed out that for the general of this area
For logical technical staff, without departing from the inventive concept of the premise, some deformations and change can also be made, these deformations and
Change should all belong to protection scope of the present invention.
Claims (8)
1. the method for pipeline fracture is monitored in a kind of air-conditioning system operation, it is characterised in that including：
Step 1., at interval of a scheduled time t, detects a pressure at expulsion Pi and an evaporator after air-conditioning system start operation
Copper pipe stream center outer surface temperature Ti；
Step 2. is calculated in adjacent time inter, pressure at expulsion knots modification Δ Pi and evaporator copper pipe stream center outer surface temperature
Knots modification Δ Ti；
Step 3. by pressure at expulsion knots modification Δ Pi compared with Δ P valves, while will be outer in the middle part of the evaporator copper pipe stream
Surface temperature knots modification Δ Ti when there is Δ Pi >=Δ P valves and Δ Ti >=Δ T valves simultaneously, is then recorded compared with Δ T valves
Number is 1 time and added up that mark cumulative number is N；And
Step 4. then judges pipeline fracture when continuous occurrence number N is equal to an accumulative test threshold Ni；When continuous occurrence number
When N is less than the accumulative test threshold Ni, then continuously simultaneously return to step 1 continues to detect the complete machine of the air-conditioning system for operation.
2. the method for pipeline fracture is monitored in air-conditioning system operation as claimed in claim 1, it is characterised in that also including step
4：When judging pipeline fracture, start safety prevention measure immediately.
3. the method for pipeline fracture is monitored in air-conditioning system operation as claimed in claim 2, it is characterised in that the security protection
Measure includes the air-conditioning system out of service and/or alarm, and/or starts air exhausting device.
4. the device of pipeline fracture is monitored in a kind of air-conditioning system operation, it is characterised in that the device includes：
Detection module, for after air-conditioning system start operation, at interval of a scheduled time t, one pressure at expulsion Pi of detection and
One evaporator copper pipe stream center outer surface temperature Ti；
Computing module, for calculating in adjacent time inter, pressure at expulsion knots modification Δ Pi and evaporator copper pipe stream middle part are outer
Surface temperature knots modification Δ Ti；And
Judge module, for by pressure at expulsion knots modification Δ Pi compared with Δ P valves, while by the evaporator copper pipe stream
Center outer surface temperature knots modification Δ Ti is compared with Δ T valves, when meeting Δ Pi >=Δ P valves and Δ Ti >=Δ T valves simultaneously,
Then record number and be 1 time and add up that mark cumulative number is N, when continuous occurrence number N is equal to an accumulative test threshold Ni,
Then judge pipeline fracture；When continuous occurrence number N is less than the accumulative test threshold Ni, then the complete machine of the air-conditioning system is continuously transported
Row simultaneously continues to detect using the detection module.
5. the device of pipeline fracture is monitored in air-conditioning system operation as claimed in claim 4, it is characterised in that also including a peace
Full protection module, for when the judge module judges pipeline fracture, starting a safety precautions to the air-conditioning system immediately.
6. the device of pipeline fracture is monitored in air-conditioning system operation as claimed in claim 5, it is characterised in that the safeguard protection
Measure includes the air-conditioning system out of service and/or alarm, and/or starts air exhausting device.
7. a kind of air-conditioning system, it is characterised in that the air-conditioning system includes the monitoring pipeline as described in claim any one of 4-6
The device of fracture.
8. a kind of air-conditioning system, it is characterised in that the air-conditioning system uses the monitoring pipeline as described in claim any one of 1-3
The method of fracture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711014183.2A CN107575997B (en) | 2017-10-26 | 2017-10-26 | Air conditioning system and method and device for monitoring pipeline breakage in operation of air conditioning system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711014183.2A CN107575997B (en) | 2017-10-26 | 2017-10-26 | Air conditioning system and method and device for monitoring pipeline breakage in operation of air conditioning system |
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| Publication Number | Publication Date |
|---|---|
| CN107575997A true CN107575997A (en) | 2018-01-12 |
| CN107575997B CN107575997B (en) | 2023-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711014183.2A Active CN107575997B (en) | 2017-10-26 | 2017-10-26 | Air conditioning system and method and device for monitoring pipeline breakage in operation of air conditioning system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587402A (en) * | 2021-06-30 | 2021-11-02 | 珠海拓芯科技有限公司 | Air conditioner control method and air conditioner |
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| JP2000320936A (en) * | 1999-05-11 | 2000-11-24 | Bosch Automotive Systems Corp | Safety unit for refrigeration cycle |
| CN103925677A (en) * | 2014-04-30 | 2014-07-16 | 珠海格力电器股份有限公司 | Control method and device for air conditioner |
| CN105953354A (en) * | 2016-04-25 | 2016-09-21 | 广东美的暖通设备有限公司 | Multiple-on-line system and control method thereof |
| CN106594973A (en) * | 2016-11-14 | 2017-04-26 | 珠海格力电器股份有限公司 | Method and device for detecting refrigerant of air-conditioning system as well as air conditioner |
| CN106705384A (en) * | 2017-02-09 | 2017-05-24 | 美的集团股份有限公司 | Refrigerant leakage reminding method and device and air conditioner |
-
2017
- 2017-10-26 CN CN201711014183.2A patent/CN107575997B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000320936A (en) * | 1999-05-11 | 2000-11-24 | Bosch Automotive Systems Corp | Safety unit for refrigeration cycle |
| CN103925677A (en) * | 2014-04-30 | 2014-07-16 | 珠海格力电器股份有限公司 | Control method and device for air conditioner |
| CN105953354A (en) * | 2016-04-25 | 2016-09-21 | 广东美的暖通设备有限公司 | Multiple-on-line system and control method thereof |
| CN106594973A (en) * | 2016-11-14 | 2017-04-26 | 珠海格力电器股份有限公司 | Method and device for detecting refrigerant of air-conditioning system as well as air conditioner |
| CN106705384A (en) * | 2017-02-09 | 2017-05-24 | 美的集团股份有限公司 | Refrigerant leakage reminding method and device and air conditioner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587402A (en) * | 2021-06-30 | 2021-11-02 | 珠海拓芯科技有限公司 | Air conditioner control method and air conditioner |
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